Update kernel to builds 8860983 am: 8cb7fbbfd4

Original change: https://android-review.googlesource.com/c/kernel/prebuilts/4.19/arm64/+/2166803

Change-Id: I7901d4bdbaf0aebb6bde4560615a87cc44391967
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>